Valve



Nov. 11, 1924 J. G. GIBSON VALVE Filed Aug. 24, 1923 L-mmuu um lil /7 i.. lli. 5 nn/ z rw. m wl n me N:

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UNITED s'ra'rr. s-

PATENT OFFICE.

JESSE G. GIBSON, 0F GROVE CITY, PENNSYLVANIA, ASSIGNCB T0 BESSE'MEB. GAS ENGINE COMPANY, 0F GROVE CITY, PENNSYLVANIA, A COBIORATION 0F PENN.

SYLVAN IA.

VALVE.

Application med August 24, 1923. Serial No. 859,125.

To all 'whom it may concern.'

Be it known that I, JESSE G. GIBSON, a

-citizen of the United States, residing at Grove City, in the county of Mercer and State. of Pennsylvania, have invented new and useful Improvements in Valves, of which the following is a specification.

'lhis invention is designed to improve what are commonly termed feather valves. It is desirable with such a valve -to permit it to yield freely under pressure to uncover' the valve opening; to prevent undue flexing in any part of the valve and to guide the movement without interfering with the free action of the valve. In the present structure I arrange the flexible plates in a ivot pin which oscillates as the valve is exed thus permitting a free action of the valve and at the saine time uiding or holding it in proper relation to lts seat. This constructlon lends itself readily to a grou ing of such plates `in that a number of t em may be readily secured to thesame pivot pin, thus giving a grid effect with a simplicit of mechanism. Other features and detai s will appear from the specification and claims.

The invention is illustrated in the accompanying drawings as followsz- Fig. 1 shows a central transverse section of the valve.

Fig. 2 a section on the line 2-2 in Fig. 1.

Fig. 3 a plan View of the valve.

Fig. 4 a plan view of the feather plates andpivot in.

1 marks t e valve chest, 2 a passage leading to the chest, 3 a pressure plate on the valve chest, 4 the`seat plate in the valve chest, 5 the valve openings through the seat plate, and 6 the seating surface on the seat plate. The valve openings 5 as shown are parallel giving to the seat plate a grid effect.

Feather plates 7 are adapted to seat on the seatin surface 6 over the openings 5 and are slightly longer than these openings. One end of each feather plate extends into a slot .8 in an oscillating pin 9. The pin is carried in a bearing recess 10. The slot 8 extends radially or diametrically into the pin 9, the lower face of the slot being in' the same plane as the surface 6 so that when the feather plate is seated the slot is in alinement with the plate.

A cover plate 11 is'arranged over the seat plate 4 and is secured thereto by screws 12. It is-provided with openings 13 which are offset from the openings 5, the intervening portions of the cover plate between the openings forming limitin stops for the feather' plates. To accomplis 1 this purpose in the preferred form the under surface of the cover plate is arched at 14 so that as the feather plate yields or moves from its seat it is flexed and received against the curved surface 14 without subjecting it to undue localized strain. The cover plate has a recess 15 which supplements the recess 10 forming a rotating bearing for the in 9 and the curve 14 is in alinement wit the slot 8 when the pin is rotated through the tlexure of the feather plate to a' position bringing the feather' plate against the surface 14 so that there is ,no strain on the feather plate at the edge of the recess. The pin 9 is provided with shoulders 9u which engage the sides of the seat and cover plate and thus hold the pin in axial position so that the feather' plates are retained in proper relation over the valve openings.

In the operation of the device, the feather plate as it is flexed has its free end swun upwardly into engagement with the curve surface 14 alining the slot with this surface andthe fastened end of the feather plate at the outside of the axis of the pin is swung down into the recess below the surface 6, the recess holding the pin .permitting this movement.

Wedge lugs 16 are arranged on the top of the cover plate and these are en aged by wedges 17 u which are drawn toget er by a screw 18, the screw having asquared end 19 by means of which it may be actuated.

What I claim as new is 1. In a valve, the combination of a seat; a resilient feather plate closing on the seat; a pivot pin to which one end of the Ifeather plate is attached, said pin rocking with a flexure of the feather' plate; and a cap having a stop' surface limiting the opening movement of the feather plate.

.2. In a valve, the combination of a seat; a resilient feather plate'closing on the seat; a pivot pin to which one end of the feather plate is attached, said pin rocking` with a -llexure of the feather plate; and a cap having an arch shaped stop surface limiting the 'opening movement of theA feather plate.

3. In a valve, the combination of a seat;

a resilient feather plate closing on the seat; a pivot pin to which one end of the feather plate is attached, said pin bein journaled in a bearing recess in the seat an rocking with a flexure of the feather plate; and a cap having a stop surface limiting the opening movement of the feather plate.

4. In a valve, the combination of a seat; a resilient feather plate closing on the seat; a pivot pin having its axis in the plane of the sea-t to which one end of the feather plate is'attached, said pin rocking with a flexure of the feather plate; and a cap having a stop surface limiting the opening movement of the feather plate.

5. In a valve, the combination of a seat; a resilient feather plate closin` on the seat; a pivot pin having a slit exten ing diametrically therein into which the feather plate extends and to which the feather plate is attached, said pin rocking with a iiexure of the feather plate; and a cap having a stop surface limiting the opening movement of the feather plate.

6. In a' valve, the combination of a seat; a resilient feather plate closin` on the seat; a pivot pin having a slit exten ing diametrically therein into which the feather plate extends and to which the feather plate is attached, said pin rocking with a flexure of the feather plate, the slit being in line with the surface of the seat: and a cap having a stop surface limiting the opening movement of the feather plate.

7. In va valve, the combination of a seat; a resilient feather plate closing on the seat; a pivot pin to which one end of the feather plate is attached, said pin rocking with a fiexure of the feather plate; and a cap having a stop surface limiting the opening movement of the valve, the axis of the pin being in alinement withA said surface.

8. In a valve, the combination of a seat; a resilient feather plate closing on the seat; a pivot pin to which one end of the feather plate is attached, said pin rocking with a iiexure of the feather plate; and a cap having a stop Asurface limiting the opening movement of the valve, said cap having a recess forming a bearing for the pin.

9. AIn a valve, the combination of a seat; a resilient feather plate closing on the seat; a pivot pin to which one end of the feather plate is attached, said pin rocking with the ilexure of the feather plate; anda cap having a stop surface limiting the opening of the feather plate, said cap and seat having supplementing recesses forming a bearing for the pin.

10. In a valve,-th e combination of a seat having a plurality of openings arranged side bf side; a plurality of resilient feather p ates lcovering said openings and closing on said seat; an a pivot pin to which each 0f the feather plates is attached, said pin rockin with a iexure of the feather plates.

11. a valve, the combination of a seat having a plurality of openings arranged side by side; a plurality of resilient feather plates covering said openings and closing on said seat; a pivot pin to which each of the feather plates is attached, said pin rocking with a liexure of the feather plates; and a cap having a stop surface limiting the open` ing movement of the feather plates.

l2.' In a valve, the combination of a seat; a resilient feather plate closing on the seat; a pivot pin to which one end of the feather plate is attached, said pin rocking with a fiexur'e of the feather plate; and means for locking the pin against axial movement.

In testimony whereof -I have hereunto set my hand.

JESSE G. GIBSON. 

